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Johnny Knoxville's, as his "Bad Grandpa" alter ego, Irving Zisman, partied with students from a UA frat in early September. At the party his beer was dosed with Ecstasy, the actor said. This is a screenshot of one of several photos posted to his Twitter account from that night.

Johnny Knoxville@realjknoxville

A screenshot from Johnny Knoxville's Twitter account shows him, as his "Bad Grandpa" alter ego, Irving Zisman, partying with students from a UA frat in early September.

Johnny Knoxville@realjknoxville

After someone at a UA fraternity party dosed actor Johnny Knoxville's beer with Ecstasy, he ruptured a tendon in his finger, which required surgery. Knoxville, disguised as his alter ego from his movie, "Bad Grandpa," thinks the injury occurred "busting through a table or climbing up a net." The screenshot from his Twitter account shows Knoxville being hoisted up to a basketball net by students.

AP Photo/Gero Breloer

Actor Johnny Knoxville arrives for the German premiere of the movie “Bad Grandpa” in Berlin, Germany, Oct. 11.

‘Jackass’ star drugged at University of Arizona frat party

Kimberly Matas
Arizona Daily Star

Oct 19, 2013

Johnny Knoxville@realjknoxville

Johnny Knoxville's, as his "Bad Grandpa" alter ego, Irving Zisman, partied with students from a UA frat in early September. At the party his beer was dosed with Ecstasy, the actor said. This is a screenshot of one of several photos posted to his Twitter account from that night.

Johnny Knoxville@realjknoxville

A screenshot from Johnny Knoxville's Twitter account shows him, as his "Bad Grandpa" alter ego, Irving Zisman, partying with students from a UA frat in early September.

Johnny Knoxville@realjknoxville

After someone at a UA fraternity party dosed actor Johnny Knoxville's beer with Ecstasy, he ruptured a tendon in his finger, which required surgery. Knoxville, disguised as his alter ego from his movie, "Bad Grandpa," thinks the injury occurred "busting through a table or climbing up a net." The screenshot from his Twitter account shows Knoxville being hoisted up to a basketball net by students.

AP Photo/Gero Breloer

Actor Johnny Knoxville arrives for the German premiere of the movie “Bad Grandpa” in Berlin, Germany, Oct. 11.

When an actor builds his reputation on being a jackass, he’s got to expect young upstarts waiting for the opportunity to pile on.

And that’s what happened to Johnny Knoxville when he shot a promo and showed a screening for his new film, “Bad Grandpa,” at a University of Arizona frat house last month according to several media sources.

Knoxville, 42, star of the “Jackass” movies, was at an unidentified Tucson frat in early September dressed as his alter ego from his new movie, “Bad Grandpa.” Several photos he posted to his Twitter account show Knoxville partying with students.

Later that night, however, someone at the party put Ecstasy in his beer, he told TMZ.

“Someone dosed me with Ecstasy and after that the wheels fell off,” he said. “I wasn’t mad at all. I hadn’t done it since my 20s. I thought, ‘This is awesome!’ ”

Articles in The Mirror and The Sun newspapers in the United Kingdom confirm the story.